There are 15 zip codes in Solano County, California. The most populated is 94533, located in Fairfield. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
94533Fairfield78,129
95687Vacaville68,996
94591Vallejo59,026
94534Fairfield41,395
95688Vacaville40,147
94590Vallejo37,991
94589Vallejo29,959
94585Suisun City29,401
94510Benicia27,223
95620Dixon22,004
94571Rio Vista10,514
94535Travis Afb3,873
94592Vallejo1,020
95625Elmira88
94512Birds Landing57

Solano County, California Zip Codes by Population (2024)